Because the net asset value of a fund unit is fixed, it is usually 1 yuan per fund unit. After investors invest in this fund, they can reinvest with the proceeds, and the investment income will accumulate continuously to increase the fund share owned by investors. For example, an investor who invests in a money market fund of 100 yuan can own 100 fund shares. After 1 year, if the return on investment is 8%, the investor will have 8 more fund shares, totaling 108, with a value of 108 yuan.

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The transaction costs of China's securities investment funds mainly include stamp duty, transaction commission, transfer fees, handling fee and securities management fee. To participate in inter-bank bond trading, it is also necessary to pay service fees for inter-bank accounts to China Government Securities Depository and Clearing Co., Ltd. and transaction fees to the National Interbank Funding Center.

Closed-end funds and LOF funds can be purchased in stock trading accounts of securities companies, and commissions are charged for on-site purchases, which are charged according to stocks. No stamp duty; According to the regulations of securities companies, the commission is generally 2 ‰.

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